JP5658265B2 - Air water vacuum syringe and method of use - Google Patents

Description

  The present invention relates to a three-way syringe (air, water, combined air water mist).

  Traditionally, dental professionals utilized two different dental instruments to draw fluids and other debris from the patient's mouth and add air / water to the patient's mouth. This required two hands to operate two separate dental instruments, so a dental assistant was needed to perform the treatment, or using these two separate dental instruments Both hands of the house were blocked.

  To solve these problems and others, the present invention provides an air water vacuum (AWV) instrument that provides a single dental instrument with the air, water, and combined air water mist function of a three-way syringe coupled to a suction device. including. This invention allows a dental professional to traditionally take two hands with one hand.

  Aspects of the invention include an air water vacuum dental instrument, provided by a handle, a head, an air control device provided by at least one of the handle and the head, and provided by at least one of the handle and the head. A water control device, a vacuum control device provided by at least one of the handle and the head, an air water vacuum coupled to the head and configured to provide at least air, water and vacuum to a mouth of a dental patient Including the tip.

More implementations of the above-described aspects of the invention include one or more of the following.
The air water vacuum dental instrument includes a rotatable tip positioner that rotatably couples the air water vacuum tip to the head to provide at least air, water and vacuum to the dental patient's mouth at the air water vacuum tip.
The vacuum control device includes a high flow rate vacuum state, a low flow rate vacuum state, and a no flow rate vacuum state.
The air water vacuum dental instrument includes a spring that urges the vacuum control device to a no flow condition. The air water vacuum dental instrument includes a valve carried by a head and a lever to control the valve.
The valve includes a periphery having a pair of high volume aspirator ports and a single saliva ejector port in communication with the pair of high volume aspirator ports.
A vacuum control device is operably associated with the rotatable trigger valve barrel to rotate the trigger valve barrel to a different flow state with each pulling force of the trigger and the rotatable trigger valve barrel carried by the handle. Includes triggers.
The vacuum control device includes a high volume suction trigger and a low volume suction pump toggle carried by the handle.
An air water vacuum dental instrument comprises a hose connected to a handle for supplying water and air, at least one of the hoses, one or more heating elements for heating the handle and at least one of the water and air Including head.
The air water vacuum dental instrument includes a heating lumen, an adjacent water lumen and an adjacent air lumen, and the heating lumen is one for heating water in the water lumen and air in the air lumen. The above heating element is included.
The head is detachably connected to the handle. The air water vacuum dental instrument includes a quick release device that is operable to disconnect the head from the handle. The head is at least one of sterilizable and autoclavable.
The air water vacuum dental instrument includes an automatic shut-off mechanism that automatically stops the vacuum in the dental patient's mouth.
The automatic shut-off mechanism allows the vacuum in the dental patient's mouth to be normal, the suction force overcomes the opposing force, and the contradictory force to stop the vacuum in the dental patient's mouth. Including a shut-off state where the suction force is overcome.
The automatic shutoff mechanism includes at least one spring or magnet to provide the opposing forces. The automatic shut-off mechanism includes at least two magnets to provide the opposing forces.
The air water vacuum tip is configured to bend at least one of water and air discharged at the tip. The air water vacuum tip includes a distal apex, a proximal apex from which at least one of water and air is discharged, and at least one of water and air discharged between them at the proximal apex during vacuum. Includes a vacuum port that bends toward the vacuum port.
The air water vacuum tip is a distal apex from which at least one of water and air is discharged, a proximal apex, and at least one of the water and air discharged straight at the distal apex during the vacuum. Includes a vacuum port that does not bend one toward the vacuum port.
The head is detachably connected to the handle, and the air water vacuum dental instrument includes an automatic water shutoff valve mechanism that automatically shuts off water flow in the decoupling of the head from the handle, and the head from the handle. An automatic air shut-off valve mechanism that automatically shuts off air is included in the decoupling of the above.

1 is a perspective view of an embodiment of an air water vacuum (AWV) device. FIG. FIG. 6 is a rear perspective view of another embodiment of an AWV instrument. 2B is a front perspective view of the AWV instrument of FIG. 2A. FIG. It is the perspective view of the Example of a starting lever and the four-way syringe of an AWV instrument. It is a side view of the starting lever of FIG. 3A. 3B is a perspective view of the valve barrel shown in FIG. 3A. FIG. It is a figure which illustrates the open position of the four-way syringe of an AWV instrument. It is a figure which illustrates the closed position of the four-way syringe of an AWV instrument. It is a figure which illustrates the saliva ejector position of the four-way syringe of an AWV instrument. FIG. 6 is a cross-sectional view of an embodiment of an automatic shut-off mechanism for an AWV instrument. It is a perspective view of the Example of the trigger valve barrel of the trigger valve mechanism of an AWV instrument. It is a side view of the Example of the trigger valve mechanism of an AWV instrument. FIG. 6 is a cross-sectional view of an embodiment of a water bending spray tip of an AWV instrument. FIG. 6 is a cross-sectional view of an example of a water spray tip of an AWV instrument. It is a perspective view of the Example of the tube heating mechanism of an AWV instrument. FIG. 2 is a side view of an embodiment of an AWV instrument including a detachable head, further illustrating an embodiment of an automatic shut-off mechanism. FIG. 13 is a perspective view of an embodiment of a base to which a detachable head of the AWV instrument of FIG. 12 is attached. FIG. 13 is a cross-sectional view of an embodiment of the automatic shut-off mechanism of the AWV instrument of FIG. 12, showing the automatic shut-off mechanism in the first state. It is sectional drawing of the automatic shut-off mechanism of FIG. 12, Comprising: The automatic shut-off mechanism of a 2nd state is shown. FIG. 6 is a perspective view of another embodiment of an automatic shut-off mechanism for an AWV instrument. FIG. 16 is a cross-sectional view of the automatic shut-off mechanism of FIG. 15 with an embodiment of the automatic shut-off gate shown in the open position. FIG. 16 is a cross-sectional view of the automatic shut-off mechanism of FIG. 15 with the automatic shut-off gate shown in the closed position. FIG. 6 is a perspective view illustrating another embodiment of a lever and valve assembly. FIG. 6 is a perspective view illustrating another embodiment of a lever and valve assembly. FIG. 6 is a perspective view illustrating another embodiment of a lever and valve assembly. FIG. 6 is an exploded perspective view illustrating another embodiment of a lever and valve assembly. FIG. 6 is an exploded perspective view illustrating another embodiment of a lever and valve assembly. FIG. 6 is a perspective view of an embodiment of an AWV tip of an AWV instrument. FIG. 6 is a perspective view of an embodiment of an AWV tip of an AWV instrument.

  With reference to FIG. 1, an embodiment of an air water vacuum (AWV) device 10 and a method of using the same will be described. The AWV instrument 10 includes a handle / grip 20 having a head portion 30. The hose 40 extends from the lowermost part of the handle 20. A rotating tip positioner 50 that can be operated with a motor and controlled by a controller extends from the front of the head 30. An elongated tubular AWV tip 60 extends from and is rotated by the rotary tip positioner 50. Air and water buttons 70, 80 are disposed on top of the head portion 30 for controlling the air and / or water operation of the AWV instrument 10. The handle 20 includes a high volume aspiration trigger 90 and a low volume aspirator toggle 100 on the trigger 90. One or more heating elements 110 may be disposed in the hose 40 to heat the water and / or air supplied to the patient via the AWV device 10.

In one or more embodiments of the AWV instrument 10, the AWV instrument 10 includes one or more of the following.
The AWV tip 60 can be disposable and / or autoclaved. A trigger that controls the activation of the vacuum function via the high-capacity suction trigger 90, and the trigger 90 includes a locking characteristic that locks in the on position. The AWV instrument 10 combines high volume suction and low volume functions within the same instrument operated with a toggle function on the trigger 90. The AWV instrument 10 combines an automatic suction safety valve or an automatic off feature in case tissue is drawn into the AWV tip 60. The hose 40 includes heated air and water to be contained. The AWV device 10 is used for simultaneous tongue retraction and low volume suction. The hose 40 is a single hose having a plurality of lumens. The AWV instrument 10 is attached to one or both of the doctor and assistant tool stations for each operator. And / or the rotating tip positioner 50 allows suction from any angle without sucking soft tissue into the tip 60.

  In use, the AWV instrument 10 supplies air, water and combined air water mist to the patient by actuating the air / water buttons 70, 80 with the thumb. Operation of trigger 90 with the fingers of the same hand controls suction. The toggle 100 allows for low or high volume suction of fluid and other debris from the patient's mouth in a single instrument. The heating element 110 warms the water / air supplied to the patient's mouth.

  In this way, the AWV instrument 10 can be done with a single hand that a dental specialist would traditionally put in two hands. The AWV instrument 10 significantly reduces the amount of tubing and scatter in the tooth motion area. The pistol type design provides better performance and comfort for an extended retraction procedure that reduces the likelihood of repetitive movement (excessive) damage. The AWV device 0 can give the third hand that has been longing for dentists and assistants, or can be more efficient by a single practitioner.

  With reference to FIG. 2A, another embodiment of the AWV instrument 200 will be described. The constituent elements of the AWV instrument 200 are specified as the same reference numbers as those of the AWV instrument 10 except for the characters added at the end. The above description of the AWV instrument 10 is incorporated into this sentence. The AWV instrument 10 includes a quick release button / mechanism 210 on the back / rear side of the handle / grip 20a that releases / releases the head 30a from the handle / grip 20a when activated. It is the same. The quick release button / mechanism 210 may include a latch or other locking mechanism that can be locked / unlocked to attach / remove the head portion 30a from the handle / grip 20a.

  Referring to FIGS. 2B, 18A and 18B, an elongate, tubular AWV tip 60a includes an elongate soft rubber co-extruded member 212 and an elongate rigid plastic base tube 214 having a “C” cross-section. The elongate soft rubber coextruded member 212 includes end projections 216 made of soft rubber or other resilient material for oral tissue protection. The end portion (end projection) 216 will usually be sharp when using a hard material such as the material of the plastic base tube 214, but since it is a soft rubber co-extruded member 212, the soft tip is reassuring to the patient. For the purpose of, it is made after cutting the tip 60a during manufacture. A hollow pin 218 provides water and air to the tip 60a. The pin 218 is fit-received and sealingly engaged with the elongated lumen 219 of the elongated soft rubber coextruded member 212 (soft rubber seals around the pin 218 to prevent leakage).

  Other differences of the AWV device 200 are the same as the AWV device 10, except that the AWV device 200 is at least in a high flow rate vacuum state (FIG. 5A), no flow saliva instead of the high volume suction trigger 90 and the low volume suction device toggle 100. It includes an activation lever 220 that controls / moves the valve (FIG. 3A) in the head portion 30a between the discharge state (FIG. 5B) and the low flow saliva discharge state (FIG. 5C). In addition, referring to FIG. 3A, the activation lever 220 includes a bridge 230 that couples the leaf-shaped ends 240 facing together. In the position shown in FIG. 2A, the bridge 230 is disposed in a laterally extending upper end recess 260 on the rear portion of the head portion 30a, and the end portion 240 is disposed in an opposite side recess 270 of the head portion 30a.

  As shown in FIG. 3A, the end 240 of the activation lever 220 is connected to the opposite end 280 of a substantially cylindrical saliva drainer valve 290 for connecting the activation lever 220 to the valve 290. Along the periphery 300 of the valve 290 is a saliva ejector port 310 and high capacity aspirator ports 320, 330. As shown in FIGS. 5A-5C, movement of the activation lever 220 causes the valve 290 to be in full communication with the high-capacity aspirator ports 320, 330 and the communication passages 350, 340, and the saliva ejector port 310 is blocked. (FIG. 5A) From the high flow rate vacuum state, the high-capacity aspirator ports 320 and 330 and the saliva discharger port 310 are disconnected from communication with the communication passages 350 and 340 (FIG. 5B). And the high-capacity aspirator port 320 partially communicates with the communication passage 340, the saliva discharger port 310 communicates completely with the communication passage 350, and the high-capacity aspirator port 330 is blocked (FIG. 5C). ) However, it is moved to the low flow saliva discharge state.

  As shown in FIG. 3B, the spring tab / plunger 360 biases the valve 290 via the lever 220 toward a no flow saliva draining state (FIG. 5B).

  With reference to FIGS. 17A-17E, another embodiment of the lever and valve assembly 362 will be described. Assembly 362 includes valve 290a, automatic shut-off and automatic adjustment slide 364, magnet 366, C-ring 368, retainer ring 370, retainer ring (with stopper), main lever 374, return arm 376, return spring 378, and return assembly A cap 380 is included.

  FIG. 17A shows a saliva drain spring rebound mechanism 367 (ie, the same function of 360 of FIG. 3B as a springed finger) and a / L shaped member 394 stop 368 for the spring lever. The retainer rings 370 and 372 are placed on the housing of the head portion. The valve lever 374 is detachable for cleaning.

  FIG. 17B shows the return assembly cap 380 covering the return spring 378.

  FIG. 17C shows a return spring 378 and a return arm 376 that rotates within the housing.

  Referring to FIG. 17D, along the periphery 300 of the valve 290 is a saliva ejector port 310a and high volume aspirator ports 320a, 330a. Valve 290 includes a cut-through for free air access. C-ring 368 holds the assembly in place. The retainer ring (with stop) 372 includes a key 384 for holding the stop 386 in place. The return arm 376 includes a disk-shaped member 388 that expands internally to freely rotate the valve 290a, allowing the return arm 376 to rotate, which is pushed back off when the return assembly cap 380 is released. As shown in FIG. 17E, the spring 378 includes an L-shaped arm 390 that extends into the hole 392 in the L-shaped member 394 of the return arm 376.

  FIG. 17E illustrates another embodiment of an automatic shut-off and self-adjusting slide assembly 396 in which the magnet 366 is replaced with a spring 397 for another resistance means with the slide 364. Lever key 398 mates with hole 399 on the end of valve 290a to drive valve 290a.

  With reference to FIG. 6, an embodiment of an automatic shut-off mechanism 400 for the AWV instrument 10, 200 will be described. For convenience in understanding aspects of the present invention, the remaining AWV instruments 10, 200 are not shown. The automatic shut-off mechanism 400 includes a cylinder 410 that integrates a spring 420 and a piston 430 therein. The cylinder 410 communicates with the communication passage 340 through a small suction pipe 450. Piston 430 is mechanically coupled to valve 290 via shaft 440. When the end of the AWV tip 60 is not blocked during normal use, a suction flow is generated in the small suction tube 450, thereby generating a vacuum flow rate via the communication passage 340. This suction flow of the small suction tube 450 pulls the piston 430 downward in the cylinder 410 and compresses the spring 420. When an obstruction occurs in the AWV 60 (eg, oral tissue is vacuumed at the AWV tip), the suction flow of the small suction tube 450 is reduced / stopped, causing a reduction / stop in the flow rate through the communication passage 340 thereafter. The biasing force of the spring 420 pushing the piston 430 upward / outward exceeds any suction force on the piston 430 opposite from the small suction tube 450. Thus, piston 430 and shaft 440 move upward in cylinder 410 by valve 290 rotating to the closed position shown in FIG. 5B. With the valve 290 in the closed position, all suction forces of the AWV tip 60 are stopped so that oral tissue is not sucked into the AWV tip 60. Normal use can be resumed by moving valve 290 to the desired position via lever 220.

  With reference to FIG. 15, another embodiment of an automatic shut-off mechanism 500 for the AWV instrument 10, 200 will be described. As with FIG. 6, the remaining AWV instruments 10, 200 are not shown for convenience in understanding aspects of the present invention. The automatic shut-off mechanism 500 is generally cylindrical and may be similar to valve 290 having a cylindrical first automatic shut-off gate 520 and a cylindrical second automatic shut-off gate 530 slidably disposed therein. A valve barrel 510 is included. Each automatic shut-off gate 520, 530 can have a magnetic polarity, such as shown as a magnetic polarity due to the magnetic force resulting in the gates 520, 530 repelling each other so that the gates are separated as shown in FIG. 16A. . When the AWV tip 60 is blocked (eg, oral tissue is vacuumed to the AWV tip), the suction force drawn toward each other in the gates 520, 530 to block the opening 540 is the gate 520, 530. The gates 520 and 530 move to the position shown in FIG. 16B where the opening 540 is blocked so that the repulsive magnetic force is overcome and the attractive force at the AWV tip 60 stops. Oral tissue is not aspirated by the AWV tip 60. Normal use resumes (and gates 520, 530 open to the position shown in FIG. 16A) by moving valve barrel 510 to the desired position (eg, off position, low volume discharge position) via lever 220. Can do. In another embodiment, the automatic shut-off mechanism 500 is slidable within the valve barrel 510 (eg, one magnetic gate can move and the other magnetic member can be attached to the valve barrel 510). Only one automatic shut-off gate can be included. Referring to FIGS. 15 and 18B, in an additional embodiment, the wall 542 defining the communication passage 340 includes a hole 544 to release suction when the AWV tip 60 is blocked / obstructed. Can do.

  7 and 8, an embodiment of the trigger valve mechanism 600 of the AWV instrument 10, 200 will be described. For convenience in understanding aspects of the present invention, the remaining AWV instruments 10, 200 are not shown. The trigger valve mechanism 600 includes a trigger valve barrel 610 that includes a ratchet 620 (a simplified illustration of a ratchet is shown) having a serrated member 630 engaged by a pawl 640 and hinged to the trigger 650. And is similar to the valve 290 except that it includes a spring (not shown) for rebounding the pawl 640. The trigger spring 660 strongly urges the trigger 650. In use, the trigger valve barrel 610 is advanced / rotated by a quarter turn for each trigger push. In other embodiments, a single first trigger of trigger 650 closes trigger valve barrel 610 from opening (eg, FIGS. 5A, 5C) (FIG. 5B) and opening with a second trigger (eg, FIGS. 5A, 5C). ) To 90 degrees. Importantly, the trigger 650 need not be depressed / pressed throughout the duration of the suction procedure.

  With reference to FIG. 9, an example of a water bending spray AWV tip 700 of the AWV instrument 10, 200 will be described. The AWV tip 700 includes a chamfered end 710 having a distal inclined vacuum opening 720 at the distal tip / vertex and a proximal inclined water / air opening 730 at the proximal tip / vertex. In use, inhalation of the suction port at the distal tilted vacuum opening 720 causes the flow of water released from the proximal tilted water / air opening 730 (as opposed to a standard three-way syringe to bend the tip) without bending the tip ( Or air or air / water combination).

  With reference to FIG. 10, another embodiment of the water spray AWV tip 750 of the AWV instrument 10, 200 will be described. The AWV tip 750 includes a chamfered end 760 having a proximal inclined vacuum opening 770 at the proximal tip / vertex and a distal inclined water / air opening 780 at the distal tip / vertex. Positioning the air / water port (s) at the apex / apex of the corners creates a straight flow of water (or air or combined air / water).

  In another embodiment, the water spray AWV tip is air / water at both the top / end portion of the corner and the bottom / adjacent portion of the corner (ie, the combination of the embodiments shown in FIGS. 9 and 10). Port (s) can be included.

  With reference to FIG. 11, the Example of the tube heating mechanism 800 of the AWV instruments 10 and 200 is described. Tube heating mechanism 800 includes a flexible resistance heating element 110 in addition to being connected to positive and negative leads 810, 820 disposed within heating lumen 830 of extruded tube / hose 40. Because the heating lumen 830 (and the heating element 110 therein) is adjacent to the air lumen 840 and the water lumen 850 of the tube / hose 40, the heat generated from the heating element 110 passes through the air lumen 840. The air transmitted through and the water transmitted through the water lumen 850 are heated. The warmed water / air transmitted by the tube / hose 40 to the patient's mouth via the AWV device 10, 200 increases patient comfort, especially when the patient is a hypersensitive tooth / gingiva.

  With reference to FIGS. 12-14B, an embodiment of an AWV instrument 900 including a removable head 910 and an embodiment of an automatic shutoff valve mechanism will be described. The constituent elements of the AWV instrument 900 are specified like reference numerals similar to those of the AWV instruments 10 and 200 except for the letters added at the end. The above description of the AWV instrument 10, 200 is incorporated herein.

  As shown in FIG. 12, the head 910 of the AWV instrument 900 is used for cleaning and sterilization of the head 910 because waste (ie saliva / debris) and water supply is transmitted through the reusable head 910. Removably attachable to the handle / grip 920 so that the head 910 can be removed.

  Referring to FIGS. 12-14B, in an embodiment of the automatic shutoff valve mechanism 930, the head 910 includes air / water buttons 912, 914 that push the connecting rod (s) 1020. Connecting rod 1020 pushes poppet valve (s) 918. Pressing the air / water buttons 912, 914 causes the air / water to flow through the poppet valve 918 past the connecting rod 1020 and into an air / water channel (not shown) that guides the air / water directly to the tip. . When the air / water buttons 912, 914 are released, the spring 1000 on the poppet valve 918 returns the poppet valve 918 to its original position into a sealed relationship that creates an automatic seal or shut-off. The connecting rod (s) 1020 eliminates the need for additional valve valves / O-rings and corresponding maintenance. The poppet valve 918 is disposed on the lower water pipe connector 940 and the lower air pipe connector 950. The connectors 940, 950 include an anchor 960 that is connected to a cylindrical chamber 980 having a handle / grip member 920 and an upper open end 984. The cylindrical chamber 980 includes a valve seat 990 having a spring 1000 and a ball (rubber or metal) 1010 thereon. Buttons 70, 80 actuate connecting rod 1020 to depress poppet actuator 919 of poppet valve 918 so that ball 1010 is pressed downward for water / air release. As shown in FIG. 14B, when the connecting rod 1020 is retracted (eg, the head 910 can then be removably attached to the handle / grip 920), the spring 1000 can move down the water pipe connector 940 and below. The air tube connector 950 prompts the ball 1010 to be in a sealed relationship with the upper open end 984 to create an automatic seal or shut-off.

  The above figures can represent exemplary configurations for the present invention, which aids in understanding the features and functions that can be included in the present invention. The invention is not limited to the illustrated architecture or configuration, and can be implemented using various alternative architectures and configurations, in addition to the invention described above with respect to various exemplary embodiments and implementations. Nevertheless, even though this type of embodiment may be applied instead of being described, this type of feature is shown as being part of the described embodiment. It should be understood that a single or partial combination of one or more other embodiments of the present invention may be various features and functions described in one or more individual embodiments. Accordingly, the breadth and scope of the present invention, particularly any of the claims set forth below, should not be limited by any of the exemplary embodiments described above.

Terms, phrases and variations thereof used in this document should be construed as unconstrained, contrary to limitation, unless explicitly stated otherwise. As an example of the above, the term “including” should be read as “including but not limited to”. The term "example" is used to provide a typical example of items (items, elements) in the discussion and is not exhaustive or limiting. And adjectives such as “conventional”, “conventional”, “standard”, “well-known” and similar meaning terms limit the items (items, elements) available for a given period or temporarily Although not to be construed as being read instead, it is read including standard techniques, conventional, conventional, or normal, or available or known now or in the future.
Similarly, a group of terms connected to the conjunction “and” should not be read as necessary for each one of those terms to be present in groups, but rather explicitly stated otherwise. Should be read as "and / or" unless otherwise noted. Similarly, a group of terms linked to the conjunction “or” should not be read as requiring mutual exclusivity within the group, but rather “and / or” unless explicitly stated otherwise. Or "". Further, if a disclosed item, element or component may be stated in the singular or claimed (claimed) but the limitation to the singular is not clearly established, the plural is considered within the scope of the claim. Is done. Spreading a phrase such as “one or more”, “at least”, or “not just”, or sometimes other phrases, is not read to mean that a narrower case is intended, or Cases where this kind of spreading phrase may be missing are not required.

Claims (18)

A handle,
Head,
An air control device provided by at least one of the handle and the head;
A water control device provided by at least one of the handle and the head;
A vacuum control device for controlling the valve, including a vacuum control valve provided by at least one of the handle and the head and carried by the head and lever;
An air water vacuum tip coupled to the head and configured to provide at least air, water and vacuum to a dental patient's mouth;
With
The head has a first communication passage leading to the air water vacuum tip and a second communication passage configured to communicate with a vacuum source;
The vacuum control valve is located between the first communication passage and the second communication passage, and is connected to the pair of high-capacity suction ports and the pair of high-capacity suction ports. Including a peripheral portion having
The vacuum control valve has a high flow rate vacuum state in which the pair of high capacity suction ports communicate with the first communication path and the second communication path, and one of the high capacity suction ports has the first communication path and the second communication path. A low flow vacuum state that is partially in communication with one of the communication passages, and wherein the low flow saliva ejector port is in communication with another communication passage; and the pair of high capacity aspirator ports and the low flow saliva discharge port are An air water vacuum dental instrument configured for rotation between saliva discharge states without flow rate that is blocked from communication with the first communication passage and the second communication passage.   The air water vacuum dental instrument according to claim 1, further comprising an automatic shut-off mechanism that automatically stops vacuum in the dental patient's mouth upon detection of at least partial blockage of the air water vacuum tip.   The automatic shut-off mechanism is contradictory to allow vacuum in the dental patient's mouth to normalize the suction force to overcome the opposing forces and to stop the vacuum in the dental patient's mouth The air-water vacuum dental instrument according to claim 2, including a shut-off state in which the force overcomes the suction force.   The air-water vacuum dental instrument according to claim 3, wherein the automatic shut-off mechanism includes at least one spring to provide the opposing forces.   The air-water vacuum dental instrument according to claim 3, wherein the automatic shut-off mechanism includes at least one magnet for supplying the opposing forces.   The air water of claim 1, further comprising a rotatable tip positioner that rotatably couples the air water vacuum tip to the head to provide at least air, water, and vacuum to the dental patient's mouth at the air water vacuum tip. Vacuum dental instrument.   The air-water vacuum dental instrument according to claim 1, further comprising a spring that urges the vacuum control device to a vacuum state without a flow rate.   The vacuum control device is operatively associated with the rotatable trigger valve barrel to rotate the trigger valve barrel to a different flow condition with each pulling force of the trigger and the rotatable trigger valve barrel carried by the handle The air-water vacuum dental instrument according to claim 1, comprising an actuated trigger.   The air water vacuum dental instrument according to claim 1, wherein the vacuum control device includes a high volume suction trigger and a low volume suction vacuum toggle carried by a handle.   An air water vacuum dental instrument comprises a hose connected to a handle for supplying water and air, at least one of the hoses, one or more heating elements for heating the handle and at least one of the water and air The air water vacuum dental instrument of claim 1, further comprising a head comprising The hose includes a heating lumen, an adjacent water lumen and an adjacent air lumen, wherein the heating lumen includes one or more for heating water in the water lumen and air in the air lumen. The air-water vacuum dental instrument according to claim 10 , comprising a heating element.   The air water vacuum dental instrument according to claim 1, wherein the head is detachably connected to the handle.   The air water vacuum dental instrument of claim 12, further comprising a quick release device operable to detach the head from the handle.   The air water vacuum dental instrument according to claim 12, wherein the head is at least one of sterilizable and autoclavable.   The air water vacuum dental instrument according to claim 1, wherein the air water vacuum tip is configured to bend at least one of water and air discharged at the tip.   The air water vacuum tip includes a distal apex, a proximal apex from which at least one of water and air is discharged therefrom, and at least one of water and air discharged therebetween at the proximal apex during vacuum 16. An air-water vacuum dental instrument according to claim 15, comprising a vacuum port that bends the tube toward the vacuum port.   The air water vacuum tip includes at least a distal apex from which at least one of water and air is discharged, a proximal apex, and at least water and air discharged straight at the distal apex during vacuum. 2. An air water vacuum dental instrument according to claim 1, comprising a vacuum port that does not bend one toward the vacuum port. The head is detachably coupled to the handle, and the air water vacuum dental instrument includes an automatic water shutoff valve mechanism that automatically shuts off water flow upon decoupling of the head from the handle; and The air water vacuum dental instrument according to claim 1, further comprising an automatic air shutoff valve mechanism for automatically shutting off air in the decoupling of the head from the handle.

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